Someone said the vocalist in Naoki's resonance was Naoki himself, but any proof of that?

How is Spriggan Yoshitaka and if that's true why do people keep giving him a hard time about sounding the same? I mean it sounds nothing like his other songs to me except maybe the second-to-the-last part. Second is a rhetorical question. :P

Can someone just kill the rumor that Emi and Alice are cousins if that's on topic? It's more of a bad rumor, I guess... but that is driving me crazy every time it pops up. There's like a 1% chance if you want to get complicated, but they're from different flipping countries among other things.

How is Spriggan Yoshitaka and if that's true why do people keep giving him a hard time about sounding the same? I mean it sounds nothing like his other songs to me except maybe the second-to-the-last part. Second is a rhetorical question.
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The first time I heard "Valkyrie Dimension", it reminded me of "Unicorn Tail". That was the first time I though Spriggan was another Yoshitaka alias.